Divided casting



J. YOGOM Jr.

vmvnmn CASTING.

Patented June 5, 1883.

4 WITNESSES: v INVENTOR NITED STATES ATENT OFFICE.

DIVIDED CAS TlNG.

SPECIFICATION formingpart of Letters Patent No. 279,069, dated June 5, 1883.

Application filed May 1,-18F3. (No model.)

To coZZ whom it may concern 7 Be it known that I, JAMES-YOCOM, Jr., of

the city and county of Philadelphia, in the State of Pennsylvania, have invented certain new and useful Improvements in Divided Castings, of which improvements the following is a specification.

My presentinvention is an improvement upon those for which Letters Patent of the United States Nos. 116,131 and 180,304: were granted and issued to ine under dates of June 20, 1871, and July 25, 187 6, respectively; and its object is to reduce the size and weight of the hinge-pieces employed, and to render the same properly adaptable to use in divided castings of diflerent diameters, as well as to enable proper radial butting-faces to be formed upon the sections of the casting, irrespe'ctiveof the greater or less diameter of the latter.

To these ends my improvements consist in the combination, with a divided casting formed in two sections, of a series of interlocking hinge pieces, each having a hub or boss which is devoid of lateral facing pieces or extensions, and which is therefore adapted to project from the section in which it is embedded for equal distances on each side of its center, irrespective of the angle of its tongue with the face of said section; also, in the combinationof a divided casting formed in two sections, a series of interlocking hinge-pieces, and a series of independent facingpieees, which are, respectively, united to said sections in the operation of casting.

The improvements claimed are hereinafter more fully set forth.

' In the accompanying drawings, Figure 1 is a transverse section through a pulley-hub embodying my invention at the line :0 0c of Fig. 2;

Fig. 2, a similar section through the same at the line 3 3 of Fig. 1; Fig. 3, a view in perspective of one of the hinge-pieces; Fig. 4, a similar view of one of the facing-pieces, and

Fig. 5 a view showing the relative arrangement of the hinge-pieces.

In the practice of my invention the divided casting, which may be a pulley-hub, collar, eccentric, coupling, or other structure which is to be fitted upon a shaft, is formed in two sections, A B, each having a semi-cylindrical recess suited to the diameter of the shaft. The

sections abut at the sides of said recess, and, as in my Letters Patent aforesaid, are con nected by a series of interlocking hinge-pieces and a pair of pins or pivots. is composed of a cylindrical hub or boss, (1, and a curved tongue or arm, a, projecting therefrom, said tongue being widened at and near its outer end to enable it to be firmly embedded in the casting. The hinge-pieces are inserted and adjusted in the mold in which the sections A B are cast in such position that their tongues may extend as nearly as may be in arcs concentric with. the recesses of the sections, and with the axes of their hubs in line with the butting-faces of said sections, and are arranged to interlock, as shown in Fig. 5-that is to say, with the tongues of the hinge-pieces 1 of the section A in opposite direction to the tongues of the alternate hingc-pieces 2 of the section B. That portion of the hub of each hinge-piece which projects above the face of the section in which it is to be embedded is clay-washed, to prevent the adhesion of the metal of the section thereto, and the metal poured into the mold adheres, when cold, to the remaining portion of the hinge-pieces and retains them in position in the sections, which are connected by pins or pivots a passing through central perforations in the hubs of the hinge-pieces.

In my Letters Patent Nos. 116,134 and 180, 304 aforesaid the hingepieces are shown as con structed with lateral wings or extensions, which, form the butting-faces of the sctionsdand enable the same to be separated one from the other after being cast. Such construction in volves the objection of increasing the size and weight of the hinge-pieces, and, moreover, of limiting the normal use of a hinge-piece of given form to a casting of fixed diameter, for the reason-that such change in the inclination of the tongue as would be necessary to admit of the same being madesubstantially coneentric with the recess of the section (as is desirable to afford proper strength) would effect a corresponding inclination of the buttingface Each hinge-piece L of the section from the radial plane with which it must correspond to make a true and proper joint. Under my present invention I form the hubs of the hinge-pieces without any lateral projections or facing-pieces whateverthat is to say, truly cylindrical on their exte- IOO sirable.

rior for their entire or the major portion of their extent on each side of their tongues, or for such distance about the diameter at right angles to the center line of the tongue as will sufiice to accommodate the greatest and the least diameters of castings in which the hingepiece is designed to be employed. It therefore ensues that in any and all adjustments of the hub of the hingepiece about the axis of its pin corresponding with the greater or less radius of the shaft-recess of the sections in which it is to be embedded there will be no protuberance or projection on the line of the butting-face of said section, which face may consequently be formed truly radial, as is de- The separation of said faces after the cooling of the casting may be effected either by setting in the mold a removable separating mediu1n-as wire covered with asbestuswhich is withdrawn after the cooling of the cast metal, or by the employment of independent metal iacing-pieces a, which are set in the mold in proper position to form the butting-faces of the sections A and B, and are clay-washed on their sides which constitute said faces, being united 25 same, said hinge-piece being substantially cy- 3 5 lindrical or devoid of lateral projections at and adj acent to the butting-faces of the sections.

2. The combination, substantially as set forth,

of a divided casting formed in two sections, a

series of interlocking hinge-pieces, and a sco ries of independent facing-pieces, which are respectively united to said sections in the operation of casting. Y

' JAMES YOCOM, JR.

\Vitnesses:

' .T. Sxownnx BELL, \VALTER 1). Ross. 

